单项选择题

A．Less than one year.
B．Four years.
C．Five years.
D．Ten years.
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单项选择题
A．By taxi.B．By bus.C．On foot.D．By train.
A．By taxi.
B．By bus.
C．On foot.
D．By train.
单项选择题
Breast cancer is the leading cause of cancer deaths in women.
A．Y
B．N
C．NG
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